Apple skips 4K and goes directly to what the company calls a 5K display in this expensive, extravagant all-in-one iMac desktop that will appeal to photo and video professionals -- or anyone else looking for the best possible screen resolution.

While it includes some performance and graphics concessions on the lowest priced model, the 21.5-inch iMac brings Apple's iconic design and top-notch bundled accessories and software to a wider audience.